water treatment specialty chemicals

Sludge Dewatering Conditioner Polymer

A high molecular weight cationic polyacrylamide emulsion or powder specifically engineered for sludge conditioning prior to mechanical dewatering on belt filter presses, centrifuges, and screw presses. Optimized charge density and molecular weight distributions are selected to match specific sludge types (municipal, industrial, anaerobically digested) for maximum cake dryness and minimum filtrate turbidity.

water treatment specialty chemicals

Sodium Aluminate Coagulant

CAS: 1302-42-7

Sodium aluminate (NaAlO2) is an alkaline coagulant that simultaneously provides coagulation and pH correction, making it valuable for treating acidic wastewaters and low-alkalinity source waters. It generates aluminum hydroxide flocs under alkaline conditions and is particularly effective for color and NOM removal in soft waters.

water treatment specialty chemicals

Sodium Bisulfite Oxygen Scavenger

CAS: 7631-90-5

Sodium bisulfite (NaHSO3) is a cost-effective chemical oxygen scavenger used in boiler feedwater, hot water systems, and reverse osmosis membrane pre-treatment for dechlorination. It rapidly reacts with dissolved oxygen to prevent corrosion in boiler circuits. In RO applications, it neutralizes residual chlorine to protect thin-film composite membranes from oxidative damage.

water treatment specialty chemicals

Sodium Chloride Ion Exchange Regenerant

CAS: 7647-14-5

High-purity sodium chloride (NaCl) in granular or tablet form specifically graded for softener and ion exchange resin regeneration. The brine solution produced regenerates exhausted sodium-cycle softener resin by displacing accumulated calcium and magnesium ions, restoring full exchange capacity. Low impurity levels prevent resin fouling and maintain long resin service life.

water treatment specialty chemicals

Sodium Hypochlorite Water Treatment Biocide

CAS: 7681-52-9

Sodium hypochlorite (NaOCl) solution is the most widely used oxidizing biocide in water treatment, delivering free available chlorine for disinfection of municipal water, cooling towers, and swimming pools. It rapidly inactivates bacteria, viruses, and protozoa through oxidative cell damage. Supplied as 10–15% available chlorine solution for direct metering pump dosing.

water treatment specialty chemicals

Sodium Molybdate Closed-Loop Corrosion Inhibitor

CAS: 7631-95-0

Sodium molybdate (Na2MoO4) is a non-toxic, chromate-free anodic corrosion inhibitor formulated for closed-loop cooling, heating, and glycol-based water systems where low toxicity is required. It passivates mild steel surfaces through the formation of an iron-molybdate complex film and is favored in food processing, pharmaceutical, and HVAC applications where chromate or nitrite are prohibited.

water treatment specialty chemicals

Sodium Nitrite Corrosion Inhibitor

CAS: 7632-00-0

Sodium nitrite (NaNO2) is an anodic passivator used as a corrosion inhibitor in closed-loop cooling and heating water systems, as well as in diesel engine coolants and cutting fluid formulations. It passivates the iron surface by promoting the formation of a stable iron oxide/nitrite protective layer. Typically used in combination with borax or silicate for enhanced protection.

water treatment specialty chemicals

Sodium Percarbonate (Water Treatment / AOP Grade)

CAS: 15630-89-4

Water-treatment grade Sodium Percarbonate (2Na2CO3·3H2O2) is a stable solid source of hydrogen peroxide and alkalinity, engineered for advanced oxidation processes (AOP), in-situ chemical oxidation (ISCO), pond and lake remediation, and emergency oxygen replenishment in fish farming and wastewater systems. On contact with water it dissociates into Na2CO3 + H2O2, delivering 13-14% active oxygen (27.5% H2O2 equivalent) without the transport hazards of liquid peroxide. Coated grades offer slow-release behavior over 24-72 hours, making it ideal for sediment treatment, dechlorination polishing, and odor control in lift stations. Compared with liquid H2O2, percarbonate is easier to ship, dose, and store at remote treatment sites.

water treatment specialty chemicals

Sodium Persulfate (SPS)

CAS: 7775-27-1

Sodium Persulfate (Na2S2O8) is a powerful, stable oxidizing agent widely used in advanced oxidation processes (AOP) for industrial wastewater treatment and in-situ chemical oxidation (ISCO) for soil and groundwater remediation. When activated by heat, UV light, alkali, or transition metal ions (Fe2+), it generates sulfate radicals (SO4-) with an oxidation potential of 2.6 V, capable of degrading recalcitrant organic pollutants including chlorinated solvents (TCE, PCE), 1,4-dioxane, BTEX, and PFAS precursors. Compared with hydrogen peroxide, sodium persulfate offers longer half-life in the subsurface, higher selectivity, and easier handling as a free-flowing crystalline solid. Also widely used as a polymerization initiator and metal surface treatment etchant.

water treatment specialty chemicals

Strong Acid Cation Exchange Resin

CAS: 9002-23-7

Gel-type strong acid cation exchange resin with sulfonate functional groups, used for water softening, demineralization, and condensate polishing in power generation and industrial water treatment. It exchanges calcium, magnesium, sodium, and other cations with hydrogen or sodium ions, producing softened or deionized water. Compatible with HCl and H2SO4 regeneration.

water treatment specialty chemicals

Strong Base Anion Exchange Resin

Type I or Type II strong base anion exchange resin with quaternary ammonium functional groups, used for complete demineralization paired with strong acid cation resin, silica and CO2 removal, and nitrate removal from drinking water. Regenerated with sodium hydroxide solution. Available in gel and macroporous structures to suit different water quality applications.

water treatment specialty chemicals

Sulfuric Acid pH Control Agent (Water Treatment)

CAS: 7664-93-9

Technical grade concentrated sulfuric acid (98%) used for pH depression in water treatment applications including reverse osmosis pre-treatment, cooling water pH control, and wastewater neutralization. It converts bicarbonate alkalinity to CO2 to control scaling potential in high-hardness feed waters and is used to maintain optimal coagulation pH in drinking water treatment.

water treatment specialty chemicals

Zinc Phosphate Corrosion Inhibitor

A blended zinc and orthophosphate corrosion inhibitor formulated for open recirculating cooling water systems. Zinc ions provide cathodic inhibition while phosphate anions form a mixed ferrous phosphate/zinc hydroxide barrier film on metal surfaces. This combination delivers superior mild steel protection at lower total inhibitor concentrations than either component alone.